61589579 has 2 divisors, whose sum is σ = 61589580. Its totient is φ = 61589578.

The previous prime is 61589543. The next prime is 61589609. The reversal of 61589579 is 97598516.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61589579 - 2²⁰ = 60541003 is a prime.

It is a Chen prime.

It is a weakly prime.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30794789 + 30794790.

It is an arithmetic number, because the mean of its divisors is an integer number (30794790).

Almost surely, 2^61589579 is an apocalyptic number.

61589579 is a deficient number, since it is larger than the sum of its proper divisors (1).

61589579 is an equidigital number, since it uses as much as digits as its factorization.

61589579 is an evil number, because the sum of its binary digits is even.

The product of its digits is 680400, while the sum is 50.

The square root of 61589579 is about 7847.9028408869. The cubic root of 61589579 is about 394.9138924626.

The spelling of 61589579 in words is "sixty-one million, five hundred eighty-nine thousand, five hundred seventy-nine".